Anton Ondruš (born 27 March 1950 in Solčany, Czechoslovakia) is a former Slovak football player and considered one of the best defenders of the seventies.

He started to play regularly for Slovan Bratislava in th fall of 1972. When started to play Premier league for SK Slovan Bratislava, he was slow, hesitant and they were not giving him a chance to stay long in the team. Played as a forward, scoring some goals too, but it was not much enough. The huge change became, when trainer Jozef VENGLOS put him on the post of middle defense man. He became a great defense man, with excellent play with head and able to score goals as well.

Anton Ondrus, a big dark-haired sweeper with the build of a stopper, who often stepped out of defence as effectively if not as stylishly as Franz Beckenbauer.

With this club, he won the Czechoslovak League in 1974 and 1975, and he later become the captain of this team, playing in total in 210 matches and scoring 38 goals. The team won the Czechoslovak Cup in 1974.

Ondruš played 58 matches for Czechoslovakia and scored 9 goals. As a captain, he led the national team in the 1976 UEFA European Championship. His superb performance against Cruyff‘s Netherlands in semi-finals where he scored thrice (one own goal) opened his team the door to the final match where Czechoslovakia won the gold medal in the famous Belgrade Night game against the then world champion Germany. At the 1980 UEFA European Championship, he contributed to the national team‘s bronz medal.

1981, Ondruš changed to Club Brugge K.V. to Belgium, but he played only nine games. From 1983 till 1987 he played in the French club CS Thonon-les-Bains and towards the end of his career at FC Biel-Bienne, Switzerland.

1997 he was a president of Slovan Bratislava for a short period. Currently he works in Switzerland.